Evidence map›Paper›PMID 32429270›Full record

ArticleViruses2020

Measuring Alphavirus Fidelity Using Non-Infectious Virus Particles.

Edward I Patterson, Kamil Khanipov, Daniele M Swetnam, Samantha Walsdorf, Tiffany F Kautz, Saravanan Thangamani, Yuriy Fofanov, Naomi L Forrester

Open access · goldAbstract read
In one paragraph

Article in Viruses, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 9 papers.

0numbers the graph read from it
0cells of the map it votes in
9citing papers in PubMed
0.7field-weighted citation impact, top 26% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

9 citing papers in PubMed, 21 citations in OpenAlex.

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4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

8 authors at 3 institutions in 2 countries.

Edward I PattersonDepartment of Pathology, University of Texas Medical Branch, Galveston, TX 77555, USA.ORCID 0000-0003-3465-0848
Kamil KhanipovDepartment of Pharmacology and Toxicology, Sealy Center for Structural Biology and Molecular Biophysics, University of Texas Medical Branch, Galveston, TX 77555, USA.ORCID 0000-0002-3881-737X
Daniele M SwetnamDepartment of Pathology, Microbiology, and Immunology, School of Veterinary Medicine, University of California, Davis, CA 95616, USA.
Samantha WalsdorfDepartment of Pathology, University of Texas Medical Branch, Galveston, TX 77555, USA.
Tiffany F KautzDepartment of Microbiology and Immunology, University of Texas Medical Branch, Galveston, TX 77555, USA.
Saravanan ThangamaniDepartment of Pathology, University of Texas Medical Branch, Galveston, TX 77555, USA.
Yuriy FofanovDepartment of Pharmacology and Toxicology, Sealy Center for Structural Biology and Molecular Biophysics, University of Texas Medical Branch, Galveston, TX 77555, USA.
Naomi L ForresterDepartment of Pathology, University of Texas Medical Branch, Galveston, TX 77555, USA.
The University of Texas Medical Branch at Galveston · USLiverpool School of Tropical Medicine · GBUniversity of California, Davis · US

Funding

Engineering high fidelity mutations to increase safety of live-attenuated alphavirus vaccinesR01AI125902 · NIAID · UNIVERSITY OF CALIFORNIA AT DAVIS · PI COFFEY, LARK L · 2016 to 2020
$2.6M
Effects of Arboviral Population Diversity on TransmissionR01AI095753 · NIAID · UNIVERSITY OF TEXAS MED BR GALVESTON · PI THANGAMANI, SARAVANAN · 2014 to 2018
$1.9M
NIAID NIH HHS R01 AI095753NIAID NIH HHS R01 AI125902NIH HHS R01-AI095753-01A1NIH HHS R01-AI125902
6 · The paper itself

Abstract

Mutations are incorporated into the genomes of RNA viruses at an optimal frequency and altering this precise frequency has been proposed as a strategy to create live-attenuated vaccines. However, determining the effect of specific mutations that alter fidelity has been difficult because of the rapid selection of the virus population during replication. By deleting residues of the structural polyprotein PE2 cleavage site, E3D56-59, in Venezuelan equine encephalitis virus (VEEV) TC-83 vaccine strain, non-infectious virus particles were used to assess the effect of single mutations on mutation frequency without the interference of selection that results from multiple replication cycles. Next-generation sequencing analysis revealed a significantly lower frequency of transversion mutations and overall mutation frequency for the fidelity mutants compared to VEEV TC-83 E3D56-59. We demonstrate that deletion of the PE2 cleavage site halts virus infection while making the virus particles available for downstream sequencing. The conservation of the site will allow the evaluation of suspected fidelity mutants across alphaviruses of medical importance.

Indexed as

MutationAlphavirusAnimalsChlorocebus aethiopsEncephalitis Virus, Venezuelan EquineGenetic VariationGenome, ViralMutation RateVaccines, AttenuatedVero CellsViral Envelope ProteinsViral VaccinesVirionVirus ReplicationVaccines, AttenuatedViral Envelope ProteinsViral VaccinesAlphavirusarbovirusfidelity mutantsmutation frequency

Identifiers

PMID32429270
PMCPMC7291308
OpenAlexW3025811446

What OpenQuestion holds

Textmetadata
LicenceCC BY
Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.